Update .gitignore, add dist directory

dist/utils/grab-backup-data.d.ts

@@ -0,0 +1,12 @@
+type Params = {
+    backup_name: string;
+};
+/**
+ * Parse timestamped backup/export names: `{db_name}-{timestamp}[.sql|.tar.gz|...]`
+ */
+export default function grabBackupData({ backup_name }: Params): {
+    backup_date: Date;
+    backup_date_timestamp: number;
+    origin_backup_name: string;
+};
+export {};